cleanup unpack-trees.c: shrink struct tree_entry_list

Remove the two write-only fields executable and symlink from struct
tree_entry_list.  Also replace usage of the field directory with
S_ISDIR checks on the mode field, and then remove this now obsolete
field, too.  Noticed by David Kastrup.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/unpack-trees.c b/unpack-trees.c
index 7cc029e564f3a13b3352bb5f5feae12254421f68..3b32718436ea4da838c98b53b3dba25bb99e3e9a 100644 (file)
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -11,9 +11,6 @@
 
 struct tree_entry_list {
        struct tree_entry_list *next;
-       unsigned directory : 1;
-       unsigned executable : 1;
-       unsigned symlink : 1;
        unsigned int mode;
        const char *name;
        const unsigned char *sha1;
@@ -38,9 +35,6 @@ static struct tree_entry_list *create_tree_entry_list(struct tree *tree)
                entry->name = one.path;
                entry->sha1 = one.sha1;
                entry->mode = one.mode;
-               entry->directory = S_ISDIR(one.mode) != 0;
-               entry->executable = (one.mode & S_IXUSR) != 0;
-               entry->symlink = S_ISLNK(one.mode) != 0;
                entry->next = NULL;
 
                *list_p = entry;
@@ -141,9 +135,9 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
 #endif
                        if (!first || entcmp(first, firstdir,
                                             posns[i]->name,
-                                            posns[i]->directory) > 0) {
+                                            S_ISDIR(posns[i]->mode)) > 0) {
                                first = posns[i]->name;
-                               firstdir = posns[i]->directory;
+                               firstdir = S_ISDIR(posns[i]->mode);
                        }
                }
                /* No name means we're done */
@@ -177,7 +171,7 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
                                continue;
                        }
 
-                       if (posns[i]->directory) {
+                       if (S_ISDIR(posns[i]->mode)) {
                                struct tree *tree = lookup_tree(posns[i]->sha1);
                                any_dirs = 1;
                                parse_tree(tree);